3.2.5.2.2 Processing a Participant-Removed PDU
The receiver of the Participant-Removed PDU (OD_PARTICIPANT_REMOVED) (section 2.2.4.2) MUST first validate the common header for consistency (section 3.1.5.1). If the PDU size is not long enough to contain all the fields in the message, the connection SHOULD be terminated.<20>
If the receiver wants to use the Participant list facilities of this protocol, it SHOULD process the window removal information according to the windows implementation described in section 3.1.5.3.
The participant MAY check the DiscType and DiscCode fields to determine if the participant was disconnected as a result of an error.<21>